EP 1396102 A1 20040310 - DETERMINING THE EFFECTS OF NEW TYPES OF IMPAIRMENTS ON PERCEIVED QUALITY OF A VOICE SERVICE
Title (en)
DETERMINING THE EFFECTS OF NEW TYPES OF IMPAIRMENTS ON PERCEIVED QUALITY OF A VOICE SERVICE
Title (de)
BESTIMMUNG DER EFFEKTE NEUER ARTEN VON BEEINTRÄCHTIGUNGEN AUF DIE WAHRGENOMMENE QUALITÄT EINES SPRACHDIENSTES
Title (fr)
DETERMINATION DES EFFETS DE NOUVEAUX TYPES DE DEFAILLANCE SUR LA QUALITE PERCUE D'UN SERVICE VOCAL
Publication
Application
Priority
- US 0216455 W 20020523
- US 86677001 A 20010530
Abstract (en)
[origin: WO02098030A1] Where a first communication service exhibits a first performance characteristic affecting communication quality and a second communication service exhibits both the first performance characteristic and a second performance characteristic not exhibited by the first communication service, a method for determination the effect of the second performance characteristic upon the quality of the second communication service comprising the steps: Establishing communications via the second communications service (702); Obtaining objective measures of the first performance characteristic as the second performance characteristic varies (704); Converting the objective measurement of the first performance characteristic into subjective rating based upon knowledge of the first communication service (706, 708, 710); Altering the subjective ratings to reflect the effects of the second performance characteristic by use of an assumed model for the effects of the second performance characteristic upon the subjective ratings of the first performance characteristic (712); Computing quality index values from the altered subjective ratings (712); and Adjusting the assume model to improve the correlation between the quality index values and the second performance characteristic (714)
IPC 1-7
H04J 1/12; H04J 15/00; H04J 3/10; H04M 3/22; H04M 7/00; H04L 12/26
IPC 8 full level
H04M 3/24 (2006.01); H04J 99/00 (2009.01); H04L 12/24 (2006.01); H04M 3/00 (2006.01); H04M 3/22 (2006.01); H04M 3/26 (2006.01)
CPC (source: EP)
H04M 3/2236 (2013.01); H04L 41/5009 (2013.01); H04L 43/0829 (2013.01); H04M 7/006 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02098030 A1 20021205; AT E360295 T1 20070515; CA 2448563 A1 20021205; DE 60219622 D1 20070531; DE 60219622 T2 20071227; EP 1396102 A1 20040310; EP 1396102 A4 20050112; EP 1396102 B1 20070418; JP 2004535710 A 20041125
DOCDB simple family (application)
US 0216455 W 20020523; AT 02737151 T 20020523; CA 2448563 A 20020523; DE 60219622 T 20020523; EP 02737151 A 20020523; JP 2003501102 A 20020523